Side Extension approval rate in Slough
Slough approved 86.4% of side extension applications, based on 1,026 decisions analysed.
Last updated: March 2026
86.4%
side extension approval rate
1,026
Side Extension decisions
886
Approved
140
Refused
82.2%
Slough overall
Side Extension applications are approved more often than the Slough average (82.2%), suggesting the council is relatively receptive to these projects.
How side extension compares in Slough
Side Extension
86.4%
Slough all applications
82.2%
Planning a side extension in Slough?
86.4% get approved — but the odds vary by street. Your Pro Report shows exactly what gets approved and refused near your property.
✓ Your ward's side extension approval rate
✓ Nearest comparable side extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
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✓ Nearest comparable side extension decisions
✓ Refusal triggers specific to your area
✓ PDF report for your architect
Less than one set of revised drawings.
Other project types in Slough
84.3%
86.9%
85.3%
82.9%
84.3%
87.5%
82.2%
82.2%
75.4%
91.3%
69.4%
44.1%
88.2%
83.3%